Hi there!
Before I begin, some history:
Some time ago (3 weeks ago) i decided to upgrade my RAM in quite old laptop (Samsung Q310) from stock 1x2Gb to used 2x2Gb. MemTest86 gave no errors for 2 of them that very first day, and I was satisfied running Windows 8.1 with several not-so-lightweight apps.
Now the problem itself:
Today it became necessary for me to install some Linux distro on my machine. Having some experience with Ubuntu, I decided to go for Linux Mint. So I burned image to USB flash drive and booted into it. Logo of Mint appeared, but soon after I hit to load Linux, laptop suddenly rebooted. Well, after several attempts I made a DVD and tried to repeat these steps with it. Still reboots for no clear reason. Even after I totally erased HDD and reset BIOS settings Linux still wouldn't boot up. Had an Ubuntu DVD lying around, the same thing: reboots after some time of loading. Even Windows Installer DVD would fail to boot most of the times (yeah, I managed finally to load into Linux and install it, boot again and setup it a little bit, but since then I'm unable to boot again). Afterwards I swapped 2 sticks of 2Gb for the stock one, and, eventually, it boots now without any problems!
To conclude, now I have a laptop with Linux Mint installed on it, which boots if I insert one 2Gb stick (no matter which, no matter in which slot), and fails to boot (like 90-99% of the time) if I install 2x2Gb (no matter in what combination). It's really frustrating, since both used stick were doing just great on Windows 8.1. Memtesting those sticks today gave the same results as just after the purchase: no errors were detected.
Now, some specs:
Stock RAM: Samsung M470T5663RZ3-CF7
Bought used RAMS:
Laptop: Samsung Q310 (NP-Q310-FA05RU)
All three sticks have the same parameters (voltage, timings, frequency), as far as I can tell from datasheets and google. Those bought sticks are manufactured by different brands, nevertheless they have the same chips onboard and they are detected by memtest as the same.
Finally, I could theoretically use 1 stick of 2Gb, but if I could make those almost-identical sticks work, that would be terrific, since this was working somehow for 3 whole weeks. I really appreciate any help
UPD #1
Yeah, forgot to mention, according to samsung website, my laptop fully supports 4Gb of RAM, Windows 8.1 was detecting those sticks, and even now memtest86 tells me that they run in Dual-Channel mode.
Also,there are no messages shown, neither before bootloader nor in Linux itself (Windows, LiveCDs, etc)
Before I begin, some history:
Some time ago (3 weeks ago) i decided to upgrade my RAM in quite old laptop (Samsung Q310) from stock 1x2Gb to used 2x2Gb. MemTest86 gave no errors for 2 of them that very first day, and I was satisfied running Windows 8.1 with several not-so-lightweight apps.
Now the problem itself:
Today it became necessary for me to install some Linux distro on my machine. Having some experience with Ubuntu, I decided to go for Linux Mint. So I burned image to USB flash drive and booted into it. Logo of Mint appeared, but soon after I hit to load Linux, laptop suddenly rebooted. Well, after several attempts I made a DVD and tried to repeat these steps with it. Still reboots for no clear reason. Even after I totally erased HDD and reset BIOS settings Linux still wouldn't boot up. Had an Ubuntu DVD lying around, the same thing: reboots after some time of loading. Even Windows Installer DVD would fail to boot most of the times (yeah, I managed finally to load into Linux and install it, boot again and setup it a little bit, but since then I'm unable to boot again). Afterwards I swapped 2 sticks of 2Gb for the stock one, and, eventually, it boots now without any problems!
To conclude, now I have a laptop with Linux Mint installed on it, which boots if I insert one 2Gb stick (no matter which, no matter in which slot), and fails to boot (like 90-99% of the time) if I install 2x2Gb (no matter in what combination). It's really frustrating, since both used stick were doing just great on Windows 8.1. Memtesting those sticks today gave the same results as just after the purchase: no errors were detected.
Now, some specs:
Stock RAM: Samsung M470T5663RZ3-CF7
Bought used RAMS:
Laptop: Samsung Q310 (NP-Q310-FA05RU)
All three sticks have the same parameters (voltage, timings, frequency), as far as I can tell from datasheets and google. Those bought sticks are manufactured by different brands, nevertheless they have the same chips onboard and they are detected by memtest as the same.
Finally, I could theoretically use 1 stick of 2Gb, but if I could make those almost-identical sticks work, that would be terrific, since this was working somehow for 3 whole weeks. I really appreciate any help
UPD #1
Yeah, forgot to mention, according to samsung website, my laptop fully supports 4Gb of RAM, Windows 8.1 was detecting those sticks, and even now memtest86 tells me that they run in Dual-Channel mode.
Also,there are no messages shown, neither before bootloader nor in Linux itself (Windows, LiveCDs, etc)
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